<!DOCTYPE html>
<html lang="en"  xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>欢迎页</title>
    <style>
        #welcome{
            font-size:30px;
            text-align:center;
            margin-top:80px;
            font-weight:bold;
            color:blue;
        }
    </style>
</head>
<body>
<div id="welcome">欢迎使用本系统</div>
</body>
</html>